Some provinces will sell through government agencies; others will license privately operated pot shops.

Experimentation with policy among the provinces may lead to the best policies being followed by all. If one province manages to run cannabis tourism without problems, others might adopt the same rules.

Ontario and Quebec are approaching public pot smoking differently: La belle province says “oui,” and Yours to Discover says “not here.” Over time, both will see which approach is most sensible.

Provinces will also quickly discover which rules are actually enforceable. Will it be feasible to enforce the federal “four pot plants per household” rule? (Some provinces won’t allow even this many.) To measure their height to ensure they aren’t taller than the law allows? Provincial and municipal authorities will find out and tell each other.

The other reason a potpourri of provincial differences will be good is this: In liberal democracies, we value individual choice.

Those who like the odour of pot might opt for a Gatineau evening stroll; those who feel differently will stay in the ByWard Market.

Whether you want to smoke in your apartment building, or in a hotel room, may dictate whether you live, or visit, the Gatineau or Ottawa sides of the river. Choice is good.

Will there be some confusion? Yes. But individuals have always been responsible for knowing what the law is when they visit a different jurisdiction. It will be no different for pot.